aboutsummaryrefslogtreecommitdiffstats
path: root/docs/source/lang/cpp/const.rst
diff options
context:
space:
mode:
Diffstat (limited to 'docs/source/lang/cpp/const.rst')
-rw-r--r--docs/source/lang/cpp/const.rst50
1 files changed, 0 insertions, 50 deletions
diff --git a/docs/source/lang/cpp/const.rst b/docs/source/lang/cpp/const.rst
deleted file mode 100644
index ad0c580..0000000
--- a/docs/source/lang/cpp/const.rst
+++ /dev/null
@@ -1,50 +0,0 @@
-.. highlight:: cpp
-
-.. _lang-const:
-
-``const``
-=========
-
-The ``const`` keyword stands for "constant". It is a variable
-*qualifier* that modifies the behavior of the variable, making a
-variable "*read-only*". This means that the variable can be used just
-as any other variable of its type, but its value cannot be
-changed. You will get a compiler error if you try to assign a value to
-a ``const`` variable.
-
-Constants defined with the ``const`` keyword obey the same rules of
-:ref:`variable scoping <lang-scope>` that govern other
-variables. This, and the pitfalls of using :ref:`#define
-<lang-define>`, often makes using the ``const`` keyword a superior
-method for defining constants than ``#define``.
-
-Example
--------
-
- ::
-
- // this defines a variable called "pi", which cannot be changed:
- const float pi = 3.14;
- float x;
-
- // ....
-
- x = pi * 2; // it's fine to find the value of a const variable
-
- pi = 7; // illegal - you can't write to (modify) a constant
-
-**#define** or **const**
-------------------------
-
-You can use either ``const`` or ``#define`` for creating numeric or
-string constants. For :ref:`arrays <lang-array>`\ , you will need
-to use ``const``. In general, ``const`` is preferred over ``#define``
-for defining constants.
-
-See Also
---------
-
-- :ref:`#define <lang-define>`
-- :ref:`volatile <lang-volatile>`
-
-.. include:: /arduino-cc-attribution.txt